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872 richard 1 
#!/bin/bash
64 franck 2 
# $Id: alcasar-iptables.sh 3190 2024-04-07 22:35:03Z rexy $
675 richard 3 
# Script de mise en place des regles du parefeu d'Alcasar (mode normal)
1339 richard 4 
# This script writes the netfilter rules for ALCASAR
675 richard 5 
# Rexy - 3abtux - CPN
6 
#
7 
# Reminders
1221 richard 8 
# There are four channels for log :
1294 richard 9 
#	1 tracability of the consultation equipment with The 'Netflow' kernel module (iptables target = NETFLOW);
2454 tom.houday 10 
#	2 protection of ALCASAR with the Ulog group 1 (default group)
1294 richard 11 
#	3 SSH on ALCASAR with the Ulog group 2;
12 
#	4 extern access attempts on ALCASAR with the Ulog group 3.
2454 tom.houday 13 
# The bootps/dhcp (67) port is always open on tun0/INTIF by coova
1469 richard 14 
CONF_FILE="/usr/local/etc/alcasar.conf"
1587 richard 15 
EXTIF=`grep ^EXTIF= $CONF_FILE|cut -d"=" -f2`				# EXTernal InterFace
16 
INTIF=`grep ^INTIF= $CONF_FILE|cut -d"=" -f2`				# INTernal InterFace
17 
TUNIF="tun0"								# listen device for chilli daemon
1469 richard 18 
private_ip_mask=`grep ^PRIVATE_IP= $CONF_FILE|cut -d"=" -f2`
615 richard 19 
private_ip_mask=${private_ip_mask:=192.168.182.1/24}
783 richard 20 
PRIVATE_IP=`echo $private_ip_mask | cut -d"/" -f1`			# ALCASAR LAN IP address
604 richard 21 
private_network=`/bin/ipcalc -n $private_ip_mask|cut -d"=" -f2`		# LAN IP address (ie.: 192.168.182.0)
22 
private_prefix=`/bin/ipcalc -p $private_ip_mask|cut -d"=" -f2`		# LAN prefix (ie. 24)
3043 rexy 23 
PRIVATE_NETWORK_MASK=$private_network/$private_prefix			# LAN IP address + prefix (192.168.182.0/24)
1469 richard 24 
public_ip_mask=`grep ^PUBLIC_IP= $CONF_FILE|cut -d"=" -f2`		# ALCASAR WAN IP address
3046 rexy 25 
dhcp_on_extif="off"
1585 richard 26 
if [[ "$public_ip_mask" == "dhcp" ]]
27 
then
3046 rexy 28 
	dhcp_on_extif="on"
1585 richard 29 
	PTN="\b(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\/([012]?[0-9]|3[0-2])\b"
3190 rexy 30 
	public_ip_mask=`ip addr show $EXTIF | grep -o -E $PTN`
1585 richard 31 
fi
783 richard 32 
PUBLIC_IP=`echo $public_ip_mask | cut -d"/" -f1`
1588 richard 33 
dns1=`grep ^DNS1= $CONF_FILE|cut -d"=" -f2`
34 
dns2=`grep ^DNS2= $CONF_FILE|cut -d"=" -f2`
615 richard 35 
dns1=${dns1:=208.67.220.220}
36 
dns2=${dns2:=208.67.222.222}
1585 richard 37 
DNSSERVERS="$dns1,$dns2"						# first and second public DNS servers
2688 lucas.echa 38 
INT_DNS_IP=`grep INT_DNS_IP $CONF_FILE|cut -d"=" -f2`			# Adresse du serveur DNS interne
39 
INT_DNS_ACTIVE=`grep INT_DNS_ACTIVE $CONF_FILE|cut -d"=" -f2`	# Activation de la redirection DNS interne
1332 richard 40 
BL_IP_CAT="/usr/local/share/iptables-bl-enabled"			# categories files of the BlackListed IP
1932 richard 41 
WL_IP_CAT="/usr/local/share/iptables-wl-enabled"			# categories files of the WhiteListed IP
2454 tom.houday 42 
TMP_users_set_save="/tmp/users_set_save"				# tmp file for backup users set
1364 richard 43 
TMP_set_save="/tmp/ipset_save"						# tmp file for blacklist and whitelist creation
2956 rexy 44 
TMP_ip_gw_save="/tmp/ipset_ip_gw_save"				# tmp file for already connected ips
3042 rexy 45 
SSH_LAN=`grep ^SSH_LAN= $CONF_FILE|cut -d"=" -f2`			# SSH LAN port
46 
SSH_LAN=${SSH_LAN:=0}
3043 rexy 47 
SSH_WAN=`grep ^SSH_WAN= $CONF_FILE|cut -d"=" -f2`		# SSH WAN port
3042 rexy 48 
SSH_WAN=${SSH_WAN:=0}
49 
SSH_WAN_ADMIN_FROM=`grep ^SSH_ADMIN_FROM= $CONF_FILE|cut -d"=" -f2|cut -d"/" -f2`
50 
SSH_WAN_ADMIN_FROM=${SSH_WAN_ADMIN_FROM:="0.0.0.0"}
51 
SSH_WAN_ADMIN_FROM=$([ "$SSH_WAN_ADMIN_FROM" == "0.0.0.0" ] && echo "0.0.0.0/0" || echo "$SSH_WAN_ADMIN_FROM" )
52 
SSH_LAN_ADMIN_FROM=`grep ^SSH_ADMIN_FROM= $CONF_FILE|cut -d"=" -f2|cut -d"/" -f1`
53 
SSH_LAN_ADMIN_FROM=${SSH_LAN_ADMIN_FROM:="0.0.0.0"}
54 
SSH_LAN_ADMIN_FROM=$([ "$SSH_LAN_ADMIN_FROM" == "0.0.0.0" ] && echo "$PRIVATE_NETWORK_MASK" || echo "$SSH_LAN_ADMIN_FROM" )
612 richard 55 
IPTABLES="/sbin/iptables"
3043 rexy 56 
REHABILITED_IP="/etc/e2guardian/lists/exceptioniplist"
57 
ALLOWED_SITES="/usr/local/etc/alcasar-site-direct"			# WEB Sites allowed for all (no av and no filtering for av_bl users)
2956 rexy 58 
MULTIWAN=`grep ^MULTIWAN $CONF_FILE|cut -d"=" -f2`
59 
PROXY=`grep ^PROXY= $CONF_FILE|cut -d"=" -f2`
60 
PROXY_IP=`grep ^PROXY_IP= $CONF_FILE|cut -d"=" -f2`
61 
nb_gw=`grep ^WAN $CONF_FILE|wc -l`
3046 rexy 62 
interlan=`grep ^INTERLAN= $CONF_FILE|cut -d"=" -f2`
63 
interlan=${interlan:=off}
1 root 64 
 
2688 lucas.echa 65 
# Allow requests to internal DNS if activated
66 
if [ "$INT_DNS_ACTIVE" = "on" ]
67 
then
68 
	DNSSERVERS="$DNSSERVERS,$INT_DNS_IP"
69 
fi
70 
 
2956 rexy 71 
#ipset name list for load_balancing
72 
gw_list="gw0"
73 
if [ "$MULTIWAN" == "on" ] || [ "$MULTIWAN" == "On" ]; then
74 
	for ((i=1 ; i<=$nb_gw ; i++)); do
75 
		gw_list="${gw_list} gw$i"
76 
	done
77 
fi
78 
 
1364 richard 79 
# Sauvegarde des SET des utilisateurs connectés si ils existent
80 
# Saving SET of connected users if it exists
1867 raphael.pi 81 
ipset list not_filtered 1>/dev/null 2>&1
1364 richard 82 
if [ $? -eq 0 ];
83 
then
1867 raphael.pi 84 
	ipset save not_filtered > $TMP_users_set_save
2841 rexy 85 
	ipset save av >> $TMP_users_set_save
86 
	ipset save av_bl >> $TMP_users_set_save
87 
	ipset save av_wl >> $TMP_users_set_save
2006 raphael.pi 88 
	ipset save proto_0 >> $TMP_users_set_save
89 
	ipset save proto_1 >> $TMP_users_set_save
90 
	ipset save proto_2 >> $TMP_users_set_save
91 
	ipset save proto_3 >> $TMP_users_set_save
1364 richard 92 
fi
93 
 
2956 rexy 94 
# Sauvegarde de la liste de toutes les IP déjà connectées pour les réintégrer dans le load balancing
95 
# Saving all of the already connected IP in order to put them back in the load balancing after
96 
if [ ! -f $TMP_ip_gw_save ];then
97 
	# Save only if alcasar-network.sh --save has not been executed before
98 
	for i in $gw_list;do
99 
		ipset list $i 1>/dev/null 2>&1
100 
		if [ $? -eq 0 ]
101 
		then
102 
			# the cut -d":" -f5 deletes all the lines with a :, i.e all the lines execpt the members
103 
			ipset list $i | cut -d":" -f5 | sed '/^[[:space:]]*$/d' >> $TMP_ip_gw_save
104 
		fi
105 
	done
106 
fi
107 
 
2668 rexy 108 
# Chargement de la sonde NetFlow (module noyau ipt_NETFLOW)
1291 richard 109 
# loading of NetFlow probe (ipt_NETFLOW kernel module)
1159 crox53 110 
modprobe ipt_NETFLOW destination=127.0.0.1:2055
111 
 
498 richard 112 
# Effacement des règles existantes
476 richard 113 
# Flush all existing rules
1 root 114 
$IPTABLES -F
115 
$IPTABLES -t nat -F
116 
$IPTABLES -t mangle -F
117 
$IPTABLES -F INPUT
118 
$IPTABLES -F FORWARD
119 
$IPTABLES -F OUTPUT
120 
 
498 richard 121 
# Suppression des chaines utilisateurs sur les tables filter et nat
122 
# Flush non default rules on filter and nat tables
123 
$IPTABLES -X
124 
$IPTABLES -t nat -X
125 
 
126 
# Stratégies par défaut
476 richard 127 
# Default policies
1 root 128 
$IPTABLES -P INPUT DROP
129 
$IPTABLES -P FORWARD DROP
498 richard 130 
$IPTABLES -P OUTPUT DROP
1 root 131 
$IPTABLES -t nat -P PREROUTING ACCEPT
132 
$IPTABLES -t nat -P POSTROUTING ACCEPT
133 
$IPTABLES -t nat -P OUTPUT ACCEPT
134 
 
1484 richard 135 
#############################
136 
#          IPSET            #
137 
#############################
1291 richard 138 
# destruction de tous les SET
1332 richard 139 
# destroy all SET
1876 raphael.pi 140 
ipset flush
1291 richard 141 
ipset destroy
1855 raphael.pi 142 
 
1484 richard 143 
###### BL set  ###########
144 
# Calcul de la taille / Compute the length
1932 richard 145 
bl_set_length=$(wc -l $BL_IP_CAT/* | awk '{print $1}' | tail -n 1)
1484 richard 146 
# Chargement / loading
1867 raphael.pi 147 
echo "create bl_ip_blocked hash:net family inet hashsize 1024 maxelem $bl_set_length" > $TMP_set_save
1393 richard 148 
for category in `ls -1 $BL_IP_CAT | cut -d '@' -f1`
1332 richard 149 
do
1364 richard 150 
	cat $BL_IP_CAT/$category >> $TMP_set_save
1332 richard 151 
done
1364 richard 152 
ipset -! restore < $TMP_set_save
153 
rm -f $TMP_set_save
1484 richard 154 
# Suppression des ip réhabilitées / Removing of rehabilitated ip
3043 rexy 155 
for ip in $(cat $REHABILITED_IP)
1339 richard 156 
do
2688 lucas.echa 157 
	ipset -q del bl_ip_blocked $ip
1339 richard 158 
done
159 
 
2841 rexy 160 
# ipset for exception web sites (usefull for filtered users = av_bl)
2485 franck 161 
ipset create site_direct hash:net hashsize 1024
3043 rexy 162 
for site in $(cat $ALLOWED_SITES)
2485 franck 163 
do
2688 lucas.echa 164 
    ipset add site_direct $site
2485 franck 165 
done
166 
 
1484 richard 167 
###### WL set  ###########
3099 rexy 168 
# taille fixe, car peuplé par unbound / fixe length due to unbound dynamic loading
1896 raphael.pi 169 
wl_set_length=65536
1484 richard 170 
# Chargement Loading
1867 raphael.pi 171 
echo "create wl_ip_allowed hash:net family inet hashsize 1024 maxelem $wl_set_length" > $TMP_set_save
1852 raphael.pi 172 
#get ip-wl files from ACC
1932 richard 173 
for category in `ls -1 $WL_IP_CAT |cut -d '@' -f1`
1852 raphael.pi 174 
do
1932 richard 175 
	cat $WL_IP_CAT/$category >> $TMP_set_save
1852 raphael.pi 176 
done
1364 richard 177 
ipset -! restore < $TMP_set_save
178 
rm -f $TMP_set_save
179 
 
2454 tom.houday 180 
# Restoration des SET des utilisateurs connectés si ils existent sinon création des SET
1377 richard 181 
# Restoring the connected users SETs if available, otherwise creating SETs
1364 richard 182 
if [ -e $TMP_users_set_save ];
183 
then
184 
	ipset -! restore < $TMP_users_set_save
185 
	rm -f $TMP_users_set_save
186 
else
2386 tom.houday 187 
	ipset create not_filtered hash:ip hashsize 1024
2841 rexy 188 
	ipset create av hash:ip hashsize 1024
189 
	ipset create av_bl hash:ip hashsize 1024
190 
	ipset create av_wl hash:ip hashsize 1024
2668 rexy 191 
	# pour les filtrages de protocole par utilisateur / For network protocols filtering by user
2386 tom.houday 192 
	ipset create proto_0 hash:ip hashsize 1024
193 
	ipset create proto_1 hash:ip hashsize 1024
194 
	ipset create proto_2 hash:ip hashsize 1024
195 
	ipset create proto_3 hash:ip hashsize 1024
1364 richard 196 
fi
197 
 
2956 rexy 198 
#ipsets for load balancing
199 
for i in $gw_list; do
200 
	ipset create $i hash:ip
201 
done
202 
cat $TMP_ip_gw_save | while read ip; do
203 
	gw_min="gw0"
204 
	weight=`grep ^PUBLIC_WEIGHT= $CONF_FILE | cut -d"=" -f2`
205 
	already=`ipset list $gw_min | grep Number\ of\ entries: | cut -d":" -f2`
206 
	#The *1000 is here to avoid working on floats in bash
207 
	gw_min_value=$((1000 * $already / $weight))
208 
	i=1
209 
	for gw in $gw_list;do
210 
		if [ "$gw" != "gw0" ]; then
211 
			weight=`grep ^WAN$i= $CONF_FILE | awk -F'"' '{ print $2 }' | awk -F ',' '{ print $2 }'`
212 
			already=`ipset list $gw | grep Number\ of\ entries: | cut -d":" -f2`
213 
			value=$((1000 * $already / $weight))
214 
			if [ $value -lt $gw_min_value ]
215 
			then
216 
				gw_min_value=$value
217 
				gw_min=$gw
218 
			fi
219 
			i=$(($i+1))
220 
		fi
221 
	done
222 
	ipset add $gw_min $ip
223 
done
224 
rm -f $TMP_ip_gw_save
225 
 
472 richard 226 
#############################
783 richard 227 
#       PREROUTING          #
472 richard 228 
#############################
2840 rexy 229 
# Marquage (et journalisation) des paquets qui tentent d'accéder directement aux ports d'écoute du proxy HTTP/HTTPS (E2Guardian) pour pouvoir les rejeter en INPUT
230 
# Mark (and log) the direct attempts to E2guardian listen ports in order to REJECT them in INPUT rules
2841 rexy 231 
# 8080 = ipset av_bl
2355 tom.houday 232 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8080 -j NFLOG --nflog-group 1 --nflog-prefix "RULE direct-proxy -- DENY "
783 richard 233 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8080 -j MARK --set-mark 1
2841 rexy 234 
# 8090 = ipset av_wl + av
2355 tom.houday 235 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8090 -j NFLOG --nflog-group 1 --nflog-prefix "RULE direct-proxy -- DENY "
1486 richard 236 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8090 -j MARK --set-mark 2
2844 rexy 237 
# 8443 = tranparent HTTPS for ipsets av_bl + av_wl + av (future version)
238 
#$IPTABLES -A PREROUTING -t nat -i $TUNIF -p tcp -d $PRIVATE_IP -m tcp --dport 8443 -j NFLOG --nflog-group 1 --nflog-prefix "RULE direct-proxy -- DENY "
239 
#$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp -m tcp --dport 8443 -j MARK --set-mark 6
1486 richard 240 
 
2840 rexy 241 
# Marquage des paquets qui tentent d'accéder directement aux ports d'écoute DNS (UNBOUND) pour pouvoir les rejeter en INPUT
242 
# Mark the direct attempts to DNS ports (UNBOUND) in order to REJECT them in INPUT rules
2841 rexy 243 
# 54 = ipset av_bl
1486 richard 244 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 54 -j MARK --set-mark 3
1962 richard 245 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 54 -j MARK --set-mark 3
2841 rexy 246 
# 55 = ipset av_wl
1486 richard 247 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 55 -j MARK --set-mark 4
1962 richard 248 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 55 -j MARK --set-mark 4
2840 rexy 249 
# 56 = blackall
1486 richard 250 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p tcp --dport 56 -j MARK --set-mark 5
1962 richard 251 
$IPTABLES -A PREROUTING -t mangle -i $TUNIF -d $PRIVATE_IP -p udp --dport 56 -j MARK --set-mark 5
1472 richard 252 
 
2840 rexy 253 
# redirection DNS des usagers
254 
# users DNS redirection
2841 rexy 255 
# 54 = ipset av_bl
256 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src -p udp --dport domain -j REDIRECT --to-port 54
257 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src -p tcp --dport domain -j REDIRECT --to-port 54
258 
# 55 = ipset av_wl
259 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src -p udp --dport domain -j REDIRECT --to-port 55
260 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src -p tcp --dport domain -j REDIRECT --to-port 55
2956 rexy 261 
# 53 = all other users
2517 rexy 262 
$IPTABLES -A PREROUTING -t nat -i $TUNIF ! -d $PRIVATE_IP -p udp --dport domain -j REDIRECT --to-port 53
263 
$IPTABLES -A PREROUTING -t nat -i $TUNIF ! -d $PRIVATE_IP -p tcp --dport domain -j REDIRECT --to-port 53
264 
 
2844 rexy 265 
# Redirection HTTP des usagers 'av_bl' cherchant à joindre les IP de la blacklist vers ALCASAR (page 'accès interdit')
266 
# Redirect HTTP of 'av_bl' users who want blacklist IP to ALCASAR ('access denied' page)
267 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src -m set --match-set bl_ip_blocked dst -p tcp --dport http -j REDIRECT --to-port 80
268 
 
269 
# Redirection HTTP des usagers 'av_wl' cherchant à joindre les IP qui ne sont pas dans la WL vers ALCASAR (page 'accès interdit')
270 
# Redirect HTTP of 'av_wl' users who want IP not in the WL to ALCASAR ('access denied' page)
271 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src -m set ! --match-set wl_ip_allowed dst -p tcp --dport http -j REDIRECT --to-port 80
272 
 
273 
# Journalisation des usagers "av_bl + av_wl + av" (paquets SYN uniquement). Les autres protocoles sont journalisés en FORWARD par netflow.
274 
# accounting of "av_bl + av_wl + av"  users (only syn packets). Other protocols are logged in FORWARD by netflow
275 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src ! -d $PRIVATE_IP -p tcp --dport http -m conntrack --ctstate NEW -j NFLOG --nflog-group 1 --nflog-prefix "RULE F_http -- ACCEPT "
276 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src ! -d $PRIVATE_IP -p tcp --dport http -m conntrack --ctstate NEW -j NFLOG --nflog-group 1 --nflog-prefix "RULE F_http -- ACCEPT "
277 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av src ! -d $PRIVATE_IP -p tcp --dport http -m conntrack --ctstate NEW -j NFLOG --nflog-group 1 --nflog-prefix "RULE F_http -- ACCEPT "
278 
 
279 
# Redirection des requêtes HTTP des usagers "av_bl + av_wl + av" vers E2guardian
280 
# Redirect outbound "av_bl + av_wl +av" users HTTP requests to E2guardian
2841 rexy 281 
# 8080 = ipset av_bl
2956 rexy 282 
#$IPTABLES -A PREROUTING -t mangle -i $TUNIF -m set --match-set av_bl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP  -p tcp --dport http -j MARK --set-mark 200
2841 rexy 283 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP  -p tcp --dport http -j REDIRECT --to-port 8080
284 
# 8090 = ipset av_wl & av
3170 rexy 285 
#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8090
286 
#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av src ! -d $PRIVATE_IP -p tcp --dport http -j REDIRECT --to-port 8090
2840 rexy 287 
 
2844 rexy 288 
# Redirection des requêtes HTTPS sortantes des usagers av_bl + av_wl + av vers E2Guardian (in a future version - don't forget to set E2guardian as a tranparent HTTPS proxy)
2841 rexy 289 
# Redirect outbound HTTPS requests of av_bl + av_wl + av users to E2Guardian
2844 rexy 290 
#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_bl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP  -p tcp --dport https -j REDIRECT --to-port 8443
291 
#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av_wl src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP  -p tcp --dport https -j REDIRECT --to-port 8443
292 
#$IPTABLES -A PREROUTING -t nat -i $TUNIF -m set --match-set av src -m set ! --match-set site_direct dst ! -d $PRIVATE_IP  -p tcp --dport https -j REDIRECT --to-port 8443
2840 rexy 293 
 
783 richard 294 
# Redirection des requêtes NTP vers le serveur NTP local
295 
# Redirect NTP request in local NTP server
296 
$IPTABLES -A PREROUTING -t nat -i $TUNIF -s $PRIVATE_NETWORK_MASK ! -d $PRIVATE_IP -p udp --dport ntp -j REDIRECT --to-port 123
297 
 
2956 rexy 298 
#Récupération de la marque associée à une gw pour chaque connection
299 
$IPTABLES -A PREROUTING -t mangle -j CONNMARK --restore-mark
300 
 
301 
if [ "$PROXY" == "on" ] || [ "$PROXY" == "On" ];then
302 
	$IPTABLES -A PREROUTING -t nat -i $TUNIF ! -d $PRIVATE_IP -p tcp -m multiport --dports http,https -j DNAT --to-destination $PROXY_IP
303 
fi
304 
 
305 
#Marquage pour le load balancing
306 
if [ "$MULTIWAN" == "on" ] || [ "$MULTIWAN" == "On" ]; then
307 
	temp_index=200
308 
	for i in $gw_list; do
309 
		$IPTABLES -A PREROUTING -t mangle -i $TUNIF -m set --match-set $i src -j MARK --set-mark $temp_index
310 
		temp_index=$(($temp_index+1))
311 
	done
312 
fi
313 
 
472 richard 314 
#############################
783 richard 315 
#         INPUT             #
472 richard 316 
#############################
783 richard 317 
# Tout passe sur loopback
318 
# accept all on loopback
319 
$IPTABLES -A INPUT -i lo -j ACCEPT
990 franck 320 
$IPTABLES -A OUTPUT -o lo -j ACCEPT
783 richard 321 
 
322 
# Rejet des demandes de connexions non conformes (FIN-URG-PUSH, XMAS, NullScan, SYN-RST et NEW not SYN)
2956 rexy 323 
# Drop non standard connexions (FIN-URG-PUSH, XMAS, NullScan, SYN-RST and NEW not SYN)
472 richard 324 
$IPTABLES -A INPUT -p tcp --tcp-flags FIN,URG,PSH FIN,URG,PSH -j DROP
325 
$IPTABLES -A INPUT -p tcp --tcp-flags ALL ALL -j DROP
326 
$IPTABLES -A INPUT -p tcp --tcp-flags ALL NONE -j DROP
327 
$IPTABLES -A INPUT -p tcp --tcp-flags SYN,RST SYN,RST -j DROP
2496 tom.houday 328 
$IPTABLES -A INPUT -p tcp -m tcp ! --syn -m conntrack --ctstate NEW -j DROP
498 richard 329 
 
3046 rexy 330 
# Si configuré, on autorise les réponses DHCP sur EXTIF
331 
# If configured, DHCP responses are allowed on EXTIF
332 
if [[ "$dhcp_on_extif" == "on" ]]
1587 richard 333 
then
3046 rexy 334 
	$IPTABLES -A INPUT -i $EXTIF -p tcp --dport 68 -j ACCEPT
335 
	$IPTABLES -A INPUT -i $EXTIF -p udp --dport 68 -j ACCEPT
1587 richard 336 
fi
3046 rexy 337 
 
871 richard 338 
# On rejette les trame en broadcast et en multicast sur EXTIF (évite leur journalisation)
2454 tom.houday 339 
# Drop broadcast & multicast on EXTIF to avoid log
1629 richard 340 
$IPTABLES -A INPUT -m addrtype --dst-type BROADCAST,MULTICAST -j DROP
498 richard 341 
 
783 richard 342 
# On autorise les retours de connexions légitimes par INPUT
343 
# Conntrack on INPUT
2496 tom.houday 344 
$IPTABLES -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
373 richard 345 
 
2840 rexy 346 
# On interdit les connexions directes aux ports d'écoute d'E2Guardian. Les packets concernés ont été marqués et loggués dans la table mangle (PREROUTING)
347 
# Deny direct connections on E2Guardian listen ports. The concerned paquets have been marked and logged in mangle table (PREROUTING)
2841 rexy 348 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8080 -m mark --mark 1 -j REJECT --reject-with tcp-reset # av_bl
349 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8090 -m mark --mark 2 -j REJECT --reject-with tcp-reset # av_wl + av
2844 rexy 350 
#$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 8443 -m mark --mark 6 -j REJECT --reject-with tcp-reset # av_bl + av_wl + av (future version)
791 richard 351 
 
2840 rexy 352 
# On autorise les connexions HTTP/HTTPS légitimes vers E2Guardian
353 
# Allow HTTP connections to E2Guardian
2496 tom.houday 354 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8080 -m conntrack --ctstate NEW --syn -j ACCEPT
355 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8090 -m conntrack --ctstate NEW --syn -j ACCEPT
2844 rexy 356 
#$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -p tcp --dport 8443 -m conntrack --ctstate NEW --syn -j ACCEPT # (future version)
1486 richard 357 
 
2840 rexy 358 
# On interdit les connexions directes aux ports d'écoupe DNS (UNBOUND). Les packets concernés ont été marqués dans la table mangle (PREROUTING)
359 
# Deny direct connections to DNS ports (UNBOUND). The concerned paquets are marked in mangle table (PREROUTING)
1962 richard 360 
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 54 -m mark --mark 3 -j REJECT --reject-with icmp-port-unreachable
361 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 54 -m mark --mark 3 -j REJECT --reject-with tcp-reset
362 
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 55 -m mark --mark 4 -j REJECT --reject-with icmp-port-unreachable
2840 rexy 363 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 55 -m mark --mark 4 -j REJECT --reject-with tcp-reset
1962 richard 364 
$IPTABLES -A INPUT -i $TUNIF -p udp --dport 56 -m mark --mark 5 -j REJECT --reject-with icmp-port-unreachable
2840 rexy 365 
$IPTABLES -A INPUT -i $TUNIF -p tcp --dport 56 -m mark --mark 5 -j REJECT --reject-with tcp-reset
1472 richard 366 
 
2840 rexy 367 
# On autorise les connexion DNS légitime
368 
# Allow DNS connections
2841 rexy 369 
# ipset = av_bl
783 richard 370 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 54 -j ACCEPT
1962 richard 371 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 54 -j ACCEPT
2841 rexy 372 
# ipset = av_wl
1364 richard 373 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 55 -j ACCEPT
1962 richard 374 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 55 -j ACCEPT
2840 rexy 375 
# blackall
1472 richard 376 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport 56 -j ACCEPT
1962 richard 377 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 56 -j ACCEPT
1472 richard 378 
 
2840 rexy 379 
# On accepte l'accès aux services internes
783 richard 380 
# Internal services access
2454 tom.houday 381 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport domain -j ACCEPT	# DNS
1962 richard 382 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport domain -j ACCEPT	# DNS
786 richard 383 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p icmp --icmp-type 8 -j ACCEPT	# Réponse ping # ping responce
384 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p icmp --icmp-type 0 -j ACCEPT	# Requête  ping # ping request
385 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport https -j ACCEPT	# Pages d'authentification et MCC # authentication pages and MCC
386 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport http -j ACCEPT	# Page d'avertissement filtrage # Filtering warning pages
2370 tom.houday 387 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p tcp --dport 3990:3991 -j ACCEPT	# Requêtes de deconnexion usagers # Users logout requests
786 richard 388 
$IPTABLES -A INPUT -i $TUNIF -s $PRIVATE_NETWORK_MASK -d $PRIVATE_IP -p udp --dport ntp -j ACCEPT	# Serveur local de temps # local time server
783 richard 389 
 
3042 rexy 390 
# Accès au serveur SSHD si activé en LAN et WAN
391 
# SSHD server access in LAN and WAN if enabled
392 
if [ $SSH_LAN -gt 0 ]
520 richard 393 
	then
3042 rexy 394 
	$IPTABLES -A INPUT -i $TUNIF -s $SSH_LAN_ADMIN_FROM -d $PRIVATE_IP -p tcp --dport $SSH_LAN -m conntrack --ctstate NEW -j NFLOG --nflog-group 2 --nflog-prefix "RULE ssh-from-LAN -- ACCEPT"
395 
	$IPTABLES -A INPUT -i $TUNIF -s $SSH_LAN_ADMIN_FROM -d $PRIVATE_IP -p tcp --dport $SSH_LAN -j ACCEPT
520 richard 396 
fi
3042 rexy 397 
if [ $SSH_WAN -gt 0 ]
398 
	then
399 
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_WAN_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport $SSH_WAN -m conntrack --ctstate NEW --syn -j NFLOG --nflog-group 2 --nflog-prefix "RULE ssh-from-WAN -- ACCEPT"
3043 rexy 400 
	$IPTABLES -A INPUT -i $EXTIF -s $SSH_WAN_ADMIN_FROM -d $PUBLIC_IP -p tcp --dport $SSH_WAN -j ACCEPT
3042 rexy 401 
fi
783 richard 402 
 
403 
# Insertion de règles locales
404 
# Here, we add local rules (i.e. VPN from Internet)
405 
if [ -f /usr/local/etc/alcasar-iptables-local.sh ]; then
2454 tom.houday 406 
	. /usr/local/etc/alcasar-iptables-local.sh
783 richard 407 
fi
408 
 
409 
# Journalisation et rejet des connexions (autres que celles autorisées) effectuées depuis le LAN
410 
# Deny and log on INPUT from the LAN
2844 rexy 411 
$IPTABLES -A INPUT -i $TUNIF -m conntrack --ctstate NEW -j NFLOG --nflog-group 3 --nflog-prefix "RULE rej-int -- REJECT "
783 richard 412 
$IPTABLES -A INPUT -i $TUNIF -p tcp -j REJECT --reject-with tcp-reset
413 
$IPTABLES -A INPUT -i $TUNIF -p udp -j REJECT --reject-with icmp-port-unreachable
414 
 
1393 richard 415 
# Interdiction d'accès à INTIF (n'est utile que lorsque chilli est arrêté).
783 richard 416 
# Reject INTIF access (only when chilli is down)
2844 rexy 417 
$IPTABLES -A INPUT -i $INTIF -j NFLOG --nflog-group 3 --nflog-prefix "RULE Protect1 -- REJECT "
783 richard 418 
$IPTABLES -A INPUT -i $INTIF -j REJECT
419 
 
420 
# Journalisation et rejet des connexions initiées depuis le réseau extérieur (test des effets du paramètre --limit en cours)
421 
# On EXTIF, the access attempts are log in channel 2 (we should test --limit option to avoid deny of service)
2496 tom.houday 422 
$IPTABLES -A INPUT -i $EXTIF -m conntrack --ctstate NEW -j NFLOG --nflog-group 3 --nflog-threshold 10 --nflog-prefix "RULE rej-ext -- DROP"
783 richard 423 
 
424 
#############################
425 
#        FORWARD            #
426 
#############################
3046 rexy 427 
 
2841 rexy 428 
# Blocage des IPs du SET bl_ip_blocked pour le SET av_bl
429 
# Deny IPs of the SET bl_ip_blocked for the set av_bl
430 
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set av_bl src -m set --match-set bl_ip_blocked dst -p icmp -j REJECT --reject-with icmp-host-prohibited
431 
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set av_bl src -m set --match-set bl_ip_blocked dst -p udp -j REJECT --reject-with icmp-host-prohibited
432 
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set av_bl src -m set --match-set bl_ip_blocked dst -p tcp -j REJECT --reject-with tcp-reset
1364 richard 433 
 
2184 richard 434 
# Active le suivi de session
435 
# Allow Conntrack
2496 tom.houday 436 
$IPTABLES -A FORWARD -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
790 richard 437 
 
2668 rexy 438 
# Compute uamallowed IP (ie : IP address of equipments connected between ALCASAR and router like DMZ, own servers, etc.)
2006 raphael.pi 439 
nb_uamallowed=`wc -l /usr/local/etc/alcasar-uamallowed | cut -d" "  -f1`
440 
if [ $nb_uamallowed != "0" ]
441 
then
2454 tom.houday 442 
	while read ip_allowed_line
1488 richard 443 
	do
2006 raphael.pi 444 
		ip_allowed=`echo $ip_allowed_line|cut -d"\"" -f2`
2496 tom.houday 445 
		$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m conntrack --ctstate NEW -j NETFLOW
446 
		$IPTABLES -A FORWARD -i $TUNIF -d $ip_allowed -m conntrack --ctstate NEW -j ACCEPT
2006 raphael.pi 447 
	done < /usr/local/etc/alcasar-uamallowed
448 
fi
492 franck 449 
 
2184 richard 450 
# filtrage protocole par utilisateur (profile 1 : http, https)
451 
# protocols filtering for users (profil 1 : http, https)
2496 tom.houday 452 
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_1 src -s $PRIVATE_NETWORK_MASK -p tcp -m multiport ! --dports http,https -m conntrack --ctstate NEW -j REJECT --reject-with tcp-reset
453 
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_1 src -s $PRIVATE_NETWORK_MASK -p udp -m multiport ! --dports http,https -m conntrack --ctstate NEW -j REJECT --reject-with icmp-port-unreachable
2006 raphael.pi 454 
 
2998 rexy 455 
# filtrage protocole par utilisateur (profile 2 : http https smtp pop3 pop3s imap imaps ftp sftp ssh)
456 
# protocols filtering for users (profil 2 : http https smtp pop3 pop3s imap imaps ftp sftp ssh)
2006 raphael.pi 457 
 
2998 rexy 458 
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_2 src -s $PRIVATE_NETWORK_MASK -p tcp -m multiport ! --dports smtp,http,https,pop3,pop3s,imap,imaps,ftp,ftp-data,sftp,ssh -m conntrack --ctstate NEW -j REJECT --reject-with tcp-reset
459 
	$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_2 src -s $PRIVATE_NETWORK_MASK -p udp -m multiport ! --dports smtp,http,https,pop3,pop3s,imap,imaps,ftp,ftp-data,sftp,ssh -m conntrack --ctstate NEW -j REJECT --reject-with icmp-port-unreachable
2006 raphael.pi 460 
 
2184 richard 461 
# filtrage protocole par utilisateur (profile 3 : personnalisable via l'ACC)
462 
# protocols filtering for users (profil 3 : customized with ACC)
463 
custom_tcp_protocols_list='';custom_udp_protocols_list=''
2006 raphael.pi 464 
while read svc_line
465 
do
466 
	svc_on=`echo $svc_line|cut -b1`
467 
	if [ $svc_on != "#" ]
2688 lucas.echa 468 
	then
2006 raphael.pi 469 
		svc_name=`echo $svc_line|cut -d" " -f1`
470 
		svc_port=`echo $svc_line|cut -d" " -f2`
471 
		if [ $svc_name = "icmp" ]
472 
		then
2184 richard 473 
			svc_icmp="on"
2006 raphael.pi 474 
		else
2184 richard 475 
			if [ "$custom_tcp_protocols_list" == "" ]
476 
			then
477 
				custom_tcp_protocols_list=$svc_port
478 
			else
479 
				custom_tcp_protocols_list=`echo $custom_tcp_protocols_list","$svc_port`
480 
			fi
3190 rexy 481 
			udp_svc=`grep -E "[[:space:]]$svc_port/udp" /etc/services|wc -l`
2184 richard 482 
			if [ $udp_svc = "1" ] # udp service exist
483 
			then
484 
				if [ "$custom_udp_protocols_list" == "" ]
485 
				then
486 
					custom_udp_protocols_list=$svc_port
487 
				else
488 
					custom_udp_protocols_list=`echo $custom_udp_protocols_list","$svc_port`
489 
				fi
490 
			fi
1488 richard 491 
		fi
2006 raphael.pi 492 
	fi
493 
done < /usr/local/etc/alcasar-services
2184 richard 494 
	if [ "$custom_tcp_protocols_list" == "" ]
495 
	then
496 
		$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -j REJECT
497 
	else
498 
		if [ "$svc_icmp" != "on" ]
499 
		then
500 
			$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p icmp -j REJECT --reject-with icmp-proto-unreachable
501 
		fi
2496 tom.houday 502 
		$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p tcp -m multiport ! --dports $custom_tcp_protocols_list -m conntrack --ctstate NEW -j REJECT --reject-with tcp-reset
503 
		$IPTABLES -A FORWARD -i $TUNIF -m set --match-set proto_3 src -s $PRIVATE_NETWORK_MASK -p udp -m multiport ! --dports $custom_udp_protocols_list -m conntrack --ctstate NEW -j REJECT --reject-with icmp-port-unreachable
2184 richard 504 
	fi
1488 richard 505 
 
3177 rexy 506 
# On autorise (ou pas) les utilisateurs à accéder au réseau situé entre ALCASAR et le routeur Internet
507 
# Users are allowed (or not allowed) to access the network between ALCASAR and the Internet router
508 
if [ "$interlan" != "on" ]
509 
then
510 
	$IPTABLES -A FORWARD -i $TUNIF -d $public_ip_mask -j DROP
511 
fi
512 
 
2841 rexy 513 
# Blocage des usagers 'av_wl' cherchant à joindre les IP qui ne sont pas dans la WL
514 
# Block 'av_wl' users who want IP not in the WL
515 
$IPTABLES -A FORWARD -i $TUNIF -m set --match-set av_wl src -m set ! --match-set wl_ip_allowed dst -j DROP
2674 lucas.echa 516 
 
2454 tom.houday 517 
# journalisation et autorisation des connections sortant du LAN
476 richard 518 
# Allow forward connections with log
2496 tom.houday 519 
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m conntrack --ctstate NEW -j NETFLOW
520 
$IPTABLES -A FORWARD -i $TUNIF -s $PRIVATE_NETWORK_MASK -m conntrack --ctstate NEW -j ACCEPT
1 root 521 
 
783 richard 522 
#############################
523 
#         OUTPUT            #
524 
#############################
2844 rexy 525 
# On laisse tout sortir sur la carte interne (voir les règles suivantes pour la carte externe)
526 
# We let everything out on INTIF (see following rules for the EXTIF)
2213 richard 527 
$IPTABLES -A OUTPUT ! -o $EXTIF -j ACCEPT
520 richard 528 
 
3046 rexy 529 
# Si configuré, on autorise les requêtes DHCP sur EXTIF
530 
# Allow DHCP requests on EXTIF if configured
531 
if [[ "$dhcp_on_extif" == "on" ]]
1587 richard 532 
then
533 
	$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport 67 -j ACCEPT
534 
	$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport 67 -j ACCEPT
535 
fi
536 
 
2454 tom.houday 537 
# On autorise les requêtes DNS vers les serveurs DNS identifiés
498 richard 538 
# Allow DNS requests to identified DNS servers
2496 tom.houday 539 
$IPTABLES -A OUTPUT -o $EXTIF -d $DNSSERVERS -p udp --dport domain -m conntrack --ctstate NEW -j ACCEPT
783 richard 540 
 
2844 rexy 541 
# On autorise les requêtes HTTP et HTTPS avec log Netflow (en provenance de E2guardian)
542 
# HTTP & HTTPS requests are allowed with netflow log (from E2guardian)
1159 crox53 543 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j NETFLOW
498 richard 544 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport http -j ACCEPT
2956 rexy 545 
#$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport https -j NETFLOW # When E2guardian will be in HTTPS transparent proxy)
2259 tom.houday 546 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport https -j ACCEPT
547 
 
1862 raphael.pi 548 
# On autorise les requêtes RSYNC sortantes (maj BL de Toulouse)
2468 richard 549 
# RSYNC requests are allowed (update of Toulouse BL)
1862 raphael.pi 550 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport rsync -j ACCEPT
551 
 
2454 tom.houday 552 
# On autorise les requêtes FTP
784 richard 553 
# FTP requests are allowed
3103 rexy 554 
# modprobe nf_conntrack_ftp # no more needed with kernel > 5.15.85
555 
# $IPTABLES -t raw -A OUTPUT -p tcp --dport ftp -j CT --helper ftp # no more needed with kernel > 5.15.85
784 richard 556 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp --dport ftp -j ACCEPT
2496 tom.houday 557 
$IPTABLES -A OUTPUT -o $EXTIF -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
784 richard 558 
 
2454 tom.houday 559 
# On autorise les requêtes NTP
498 richard 560 
# NTP requests are allowed
561 
$IPTABLES -A OUTPUT -o $EXTIF -p udp --dport ntp -j ACCEPT
783 richard 562 
 
2454 tom.houday 563 
# On autorise les requêtes ICMP (ping)
503 richard 564 
# ICMP (ping) requests are allowed
565 
$IPTABLES -A OUTPUT -o $EXTIF -p icmp --icmp-type 8 -j ACCEPT
783 richard 566 
 
2468 richard 567 
# On autorise les requêtes LDAP
568 
# LDAP requests are allowed
2496 tom.houday 569 
$IPTABLES -A OUTPUT -o $EXTIF -p tcp -m multiport --dports ldap,ldaps -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT
570 
$IPTABLES -A OUTPUT -o $EXTIF -p udp -m multiport --dports ldap,ldaps -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT
783 richard 571 
 
572 
#############################
573 
#       POSTROUTING         #
574 
#############################
498 richard 575 
# Traduction dynamique d'adresse en sortie
476 richard 576 
# Dynamic NAT on EXTIF
1 root 577 
$IPTABLES -A POSTROUTING -t nat -o $EXTIF -j MASQUERADE
578 
 
2956 rexy 579 
#Sauvegarde de la marque associée à la connexion pour le load balancing
580 
$IPTABLES -A POSTROUTING -t mangle -j CONNMARK --save-mark
581 
 
2495 tom.houday 582 
#############################
583 
#          FAIL2BAN         #
584 
#############################
585 
# Reload Fail2Ban
2530 lucas.echa 586 
if systemctl -q is-active fail2ban; then
2899 rexy 587 
	/usr/bin/fail2ban-client ping &>/dev/null && /usr/bin/fail2ban-client -q reload &>/dev/null
2530 lucas.echa 588 
fi